I am an owner of an HTC HD7.. Phone has been a blessing coming from two buggy android phones with lagged UI, lockups, battery drains, and random reboots. My mom was on AT&T so I recommended going Windows Phone and she got the Samsung Flash.. Phone is freezing up when she gets texts randomly. We sent the phone back and upon getting the new phone I did a force update of the Windows Phone 7 OS to build 8107. It seems to be a widespread issue with this phone if you look at AT&T reviews now, and bing/google search. Has anyone been able to confirm if it's a firmware version issue or outdated OS related? The OS was dated on the phone out of the box and zune wouldn't update it. I don't think the firmware updated so if the bug is in that revision of it we are SOL.